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bnxt_en: Add bnxt_lookup_ntp_filter_from_idx() function

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Add the helper function to look up the ntuple filter from the
hash index and use it in bnxt_rx_flow_steer().  The helper function
will also be used by user defined ntuple filters in the next
patches.

Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2023-12-22 20:22:03 -08:00 • committed by David S. Miller
parent d3c982851c
commit cb5bdd292d
1 changed files with 20 additions and 6 deletions
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26
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View file

@ -13899,6 +13899,21 @@ static bool bnxt_fltr_match(struct bnxt_ntuple_filter *f1,
return false;
}
static struct bnxt_ntuple_filter *
bnxt_lookup_ntp_filter_from_idx(struct bnxt *bp,
struct bnxt_ntuple_filter *fltr, u32 idx)
{
struct bnxt_ntuple_filter *f;
struct hlist_head *head;
head = &bp->ntp_fltr_hash_tbl[idx];
hlist_for_each_entry_rcu(f, head, base.hash) {
if (bnxt_fltr_match(f, fltr))
return f;
}
return NULL;
}
static int bnxt_rx_flow_steer(struct net_device *dev, const struct sk_buff *skb,
u16 rxq_index, u32 flow_id)
{
@ -13963,12 +13978,11 @@ static int bnxt_rx_flow_steer(struct net_device *dev, const struct sk_buff *skb,
idx = bnxt_get_ntp_filter_idx(bp, fkeys, skb);
head = &bp->ntp_fltr_hash_tbl[idx];
rcu_read_lock();
hlist_for_each_entry_rcu(fltr, head, base.hash) {
if (bnxt_fltr_match(fltr, new_fltr)) {
rc = fltr->base.sw_id;
rcu_read_unlock();
goto err_free;
}
fltr = bnxt_lookup_ntp_filter_from_idx(bp, new_fltr, idx);
if (fltr) {
rcu_read_unlock();
rc = fltr->base.sw_id;
goto err_free;
}
rcu_read_unlock();